关于我的爱好的英语作文高中【精选20篇】

Nowadays, electronic music is very popular around the world. First electronic music got popular from Lady Gaga, her creative dressing styles caught people’s attention and then people started to notice her music. They fell in love with her electronic music. Unlike rock and roll music, electronic music is more favorable by me. It makes me excited and I am totally lost in the wonderful music. Once my friends and I went to a music festival. There were so many people standing there and listening to the music. Especially when the DJ came out and everybody got excited. When the DJ played electronic music, my friends and I shook our bodies and joined the crowd to dance. It was such a wonderful experience for me. I will never forget the power of electronic music. It brings people together and share the same emotion.

电子音乐现在在世界各地都很受欢迎。电子音乐是从Lady Gaga开始流行的，她奇特的穿衣风格引起了人们的注意，然后大家开始注意到了她的音乐，并且爱上了她的电子音乐。它跟摇滚音乐不一样，我更加喜欢电子音乐，这可以让我兴奋。我完全迷失在美妙的音乐中。有一次我和我的朋友们去了一个音乐节。很多人站在那里听音乐。特别是当DJ出来时，每个人都很兴奋。DJ播放电子音乐时，我和我的朋友都扭动着身体，加入了人群中跳起舞来。这对我来说是那么奇妙的经历。我永远不会忘记电子音乐的力量，它使人与人走到一起，分享着相同的情感。

Florence is my favorite city.Its name in Italian means "the city of flowers".And it is located in central Italy.In the north of it are Careggi mountain and Rifredi mountain.Besides,there are always many fine days in Florence.During the 15th century to the 16th century,Florence was the most famous art center in Europe.It is the birthplace of Renaissance,many great artists were born here,like Dante.For me ,Florence has its special meaning.My favorite man who has been living in my heart for two years called Xiang Yutian.Since we first met,his dream is to go to Florence.But his dream failed to be realized until he lost his memory.It is such a great pity.So,if you havent still made up your mind,listen to me,go to Florence and hug the person you love.

[高中英语作文200字

Dear Mum and Dad,

Time flies! Ive been here for nearly a year. Im very pleased to find that our school is really a good one. The students in our school work hard at their lessons. They take an active part in activities that help to improve their qualities and health. They are friendly to each other and always ready to help each other.

The teachers here all enjoy their work and they love their students. They work hard and do what they can do to help their students. And the students respect their teachers. They get on well with each other. The students in our school try their best to kkp the school yard clean and tidy. They never throw waste about nor pick the flowers.

In a word, I am deeply impressed by the harmonious atmosphere in this school. I love my new school.

Yours,

Tom

亲爱的妈妈和爸爸，

时光飞逝！我来这儿已经快一年了。我很高兴发现我们学校真是一个好的学校。我们学校的学生在功课上努力工作。他们积极参加活动，帮助提高他们的素质和健康。他们彼此友好，随时准备互相帮助。

这里的老师们都喜欢他们的工作，他们喜欢他们的学生。他们努力工作，尽他们所能做的来帮助他们的学生。和学生尊重他们的老师。他们相处得很好。我们学校的学生尽力北校园干净整洁。他们从不乱扔垃圾，也不摘花。

一句话，我对这所学校的和谐氛围印象深刻。我爱我的新学校。

导入：

第1段：Some people hold the opinion that A is superior to B in many ways. Others, however, argue that B is much better. Personally, I would prefer A because I think A has more advantages.

正文：

第2段：There are many reasons why I prefer A. The main reason is that ... Another reason is that...(赞同A的原因)

第3段: Of course, B also has advantages to some extent... (列出1~2个B的优势)

结论：

第4段: But if all these factors are considered, A is much better than B. From what has been discussed above, we may finally draw the conclusion that ...(得出结论) オ

China has long been known as “the land of ceremony and propriety.” Today however people often complain that public morals are no longer what they used to be. A family for example likes a cell of society which also mirrors the general mood of a country. As we know the Chinese have very strong family ties. But with the emergence of a “modern” concept to families people find that problems like high divorce rate and extramarital affairs become more serious than ever before.

Another example: the name of Lei Feng who was always ready to lend a helping hand to others used to be known by almost all Chinese as a model to learn from. But today some people claim that “the spirit of Lei Feng” is outdated. Fashionable ideas say money talks. In the early stage of the market economic development the appearance of some evil phenomena is not surprising. But we should not sit passively by and let it run rampant. Instead active measures should be taken to improve morals and ethics of the public.

Personally the media should play a leading role in this regard. They should spare no effort to praise the good and criticize the evil. They should guide people how to tell the truth goodness and beauty from the fault ugliness and evil.中国素有“礼仪之邦”的今天，然而，人们经常抱怨公共道德也不再是过去的样子了。一个家庭，例如，喜欢一个社会的细胞，这也反映了一个国家的一般情绪。正如我们所知道的，中国人有很强的家庭关系。但随着家庭的“现代”概念的出现，人们发现问题的高离婚率和婚外情变得比以往更为严重。

另一个例子：雷锋的名字总是愿意伸出援助之手给别人，被称为几乎所有的中国人作为一个模型来学习。但今天，有人声称“雷锋精神”已经过时了。时髦的想法说钱谈判。在市场经济发展的初期，一些恶现象的出现并不令人惊讶。但我们不应该被动地坐着，让它横行。相反，应采取积极的措施来改善公众的道德和道德。

就个人而言，媒体应该在这方面发挥主导作用。他们应该不遗余力地赞美善和批判邪恶。他们应该引导人们如何从错误、丑陋和邪恶中讲真话、善和美。

篇一：

The ancient said the world is a book and those who do not travel read only one page. I like travel, because travel not only allows me to enjoy the great rivers and mountains of the motherland, but also brings me knowledge and exercise. Beautiful sceneries make me impressed and friendly people make me warm. Travel is a process of discovery of beauty that would company my whole life. I like the feeling on the road, which greatly enrich my life and fields of vision. Being to different places, seeing different views makes me know how big the world is, so that I won’t bother my trifles. I think a broad mind is extremely important to a person, and traveling is a good way to get it. Maybe some people would say that I travel just because I want to relax. There’s no doubt about that. No matter for what reason, traveling is attractive to us all.

古人云：读万卷书，不如行万里路。我喜欢旅行，旅行不仅让我饱览祖国的大好河山，而且在学到知识的同时还锻炼了自己。美丽的风景让我印象深刻，有好的人们也让我倍感温暖。旅行就是一个发现美的过程，这种美的感受将会陪伴我的终生。我喜欢在路上的感觉，这极大的丰富了我的生活和视野。到不同的地方，看不同的风景会让我知道世界之大，从而不会被琐事叨扰。我认为开阔的胸襟对一个人来说尤为重要，而旅行是开阔胸襟的一个好方式。也许有的人会说，我之所以去旅行，只是因为想得到放松，这是毫无疑问的。不管出于什么原因，旅行总是充满诱惑。

篇二：

As for this essay, I want the person who likes travel to read. And, I also want the person who yearns to the solitary journey to read.

I like travel very much. I often go to travel. It meets a lot of people when traveling. It can touch not only the person but also the region. Therefore, it comes to want to go even times how many.

I was traveling and all the people met had a very warm mind. It was very kind. There is a person who taught variety of land, too. I do not think meeting with two another degrees in the person. However, I do not think that I forget. Because, The reason is that there are a lot of very good memories.

Therefore, travel is not stopped. It went to not only the country but also foreign countries. The communication of the intention can have been done with the person in the country though the word did not run well. However, I thought that the handicap of the word was large. I thought it was good if the word could be understood more many times. Therefore, I think that I should study the language study more. It can meet the one different according to the land when traveling. The tourist spot is, and there is a lot of one not so either. There are a lot of very good points of the place taught to the person in local. Therefore, it is always made to speak. I have not traveled still alone. I want to go out to travel alone sometimes. How about you? Traveling with someone is also good. However, I yearn to the solitary journey very much. It is not, and yearns for the destination to free travel. I want to go out to unrestrained travel some time.

Finally, I yearn to the solitary journey. However, I do not hate tour travel. I think that there is a merit also in the tour. I think that traveling with the person who does not know also has the enjoyment. However, I like independent tour more. Which do you like?

篇三：

The ancient said the world is a book and those who do not travel read only one page. I like travel, because travel not only allows me to enjoy the great rivers and mountains of the motherland, but also brings me knowledge and exercise. Beautiful sceneries make me impressed and friendly people make me warm. Travel is a process of discovery of beauty that would company my whole life. I like the feeling on the road, which greatly enrich my life and fields of vision. Being to different places, seeing different views makes me know how big the world is, so that I won’t bother my trifles. I think a broad mind is extremely important to a person, and traveling is a good way to get it. Maybe some people would say that I travel just because I want to relax. There’s no doubt about that. No matter for what reason, traveling is attractive to us all.

[我喜欢旅行英语高中作文

my hobbie

here are a great many hobbies to choose from. Some people enjoy collecting coins or stamps, others choose to spend their time on sports or music. I have many hobbies, but playing basketball is my favorite one. At weekends, we always build a team to play basketball against another one in our neighbourhood. The competitions brought us so much fun. I think playing basketball is a good way to build up ones body and relax oneself. But I will always remember that its unwise to spend too much time playing

There are many festivals in China，During these holidays, my favorite holiday is Chinese New Year.Not only because it’s the biggest festival in the year, but also because it’s a new beginning that brings hope to people and it’s time for family gathering.Before the festival, people come home no matter where they are.Usually, we have a big dinner on the New Year’s Eve. And then families sit together and share their lives or planes.Some will play games or hang out to have some fun.

On the New Year’s Day, people get up early and say good words to anyone they meet.Children can get lucky money from relatives.In the following days, we will visit relative’s home and bring New Year’s wishes to them.In short, it’s a time for family gathering and all of us enjoy it.

在中国，一年有很多节日，在这些节日中，我最喜欢春节。这不仅因为它是一年中最大的节日，更因为它是新一年的开始，给人们带来新的希望，也因为它是亲朋好友团聚的时刻。不管身在何方，人们总会在春节前回到家里准备过节。

通常，我们会在除夕夜吃一顿丰盛的晚餐，之后家人团座一起，分享一年以来的生活以及新年计划。有的人则会玩游戏或者出去玩。大年初一，人们通常会早起，会与见到的人说吉祥话。孩子们会得到压岁钱。在接下来的几天里，人们会带上新年祝福互相串门拜年。总之，春节是一个欢聚一堂、供人享乐的日子。

Thanksgiving Day

Thanksgiving is a holiday celebrated in much of North America, generally observed as an expression of gratitude, usually to God. The most common view of its origin is that it was to give thanks to God for the bounty of the autumn harvest. In the United States, the holiday is celebrated on the fourth Thursday in November. In Canada, where the harvest generally ends earlier in the year, the holiday is celebrated on the second Monday in October, which is observed as Columbus Day or protested as Indigenous Peoples Day in the United States.

Thanksgiving is traditionally celebrated with a feast shared among friends and family. In the United States, it is an important family holiday, and people often travel across the country to be with family members for the holiday. The Thanksgiving holiday is generally a "four-day" weekend in the United States, in which Americans are given the relevant Thursday and Friday off. Thanksgiving is almost entirely celebrated at home, unlike the Fourth of July or Christmas, which are associated with a variety of shared public experiences.

[高中英语作文感恩节

the beijing zoo is the largest in asia and one of the largest in the world. there are hundreds of different kinds of animals in it.

we can see yellow, green, orange and brown birds, which can sing nice songs. the elephants have a long nose and big ears and they are kind to humans. we can also see big and little monkeys running and dancing, just like happy children. pandas, with good manners, are very friendly and polite to visitors. we will certainly have a good time there.

Now I want to say something about my dream. What is my dream? I often ask

myself. In my mind, everyone shall have his own dream. I think that having a

dream means that we have an idea, and then we will do all the things to achieve

the target. As long as we have a goal to be realized, we won’t be blind at

least.

My dream is to become a successful doctor, helping those sick people and

saving their lives. Of course, to be a good doctor is very difficult, but I will

do whatever I can do to keep everyone healthy. Thats my dream. I want to try my

best to help the poor sick people of our country. I want to let them have an

opportunity to receive excellent treatments for their illnesses without having

to pay much or just enjoy them free. China is a developing country which needs

good medicine and good doctors, especially in the countryside and distant

villages.

Now I’m a junior student on Grade One, all my classmates and I are working

hard. We all know that the entrance exam of high schools coming in the year of

2009 is a big challenge for us, so we must study harder and harder in order to

go to a good high school. Thus after we finish our senior high school, we are

able to go to a good university. Finally, we can find a good job in society.

My dream is also that although at present I’m good at study, I’ll still try

my best to be the study winner. Now everything I do is close to my dream. I feel

life is fill with hope and is colorful, and I have enough confidence to realize

my dream.

I know that fantasy is something hard to realize, but dream can. I’ll work

hard for my dreams, I’ll never give up.

一、总结句型

1) ……in general/above all/with the result that/as a

result/consequently，……

2) As far as I am concerned/as for me，……

3) This truth above seems to be self-evident.

4) Whether we examine the ……above，such things can happens anywhere anytime to anyone.

5) In my point of view，I like/prefer A much more than B.

6) I still prefer A，however，for they teach me not only to be ……but also to be…… ，both in ……and in……

7) There is no doubt that……

8) In order to make our world a better place in which to live we should efforts to……

9) To a large extent，……，therefore，reflects……

10) If all above mentioned measures are achieved，……

11) Wherever you are and whatever you do，……is always meaningful.

12) So clear/evident/obvious it is that there are quite different opinions on it.

13) Now，which one do you prefer——the one……or the one……? Were it left to me to select，I should not hesitated a moment to choose the former/latter.

二、开首句型

1) Have you ever gone……? Have you ever been to……? If you have no experience like these，your life is an inadequate one.

2) Are you……? Are you……? We are，usually.

3) In large part as a consequence of……，somebody have focused a great deal of attention in recent years on something.

4) We expect the day will come when A with its characteristic of……

5) Being adj.is one of the virtues that people must possess (not only in……but also in……/during……/when……)

6) What A to B，that C to D

7) Currently，there is a widespread/serious concern over that……

8) The reasons for the……are manifold，for instance，……

9) Several factors contribute to this……，such as……，as for as I’m concerned，however，……is the most significant ingredient/element.

10) ……is more violent than what we thought it should be before.

11) There are intimate relations between the two.

三、并列句型

1) Some people like A due to…… However，there are many young people，including me，especially like B.

2) There might be two reasons，I think……，for the change.

3) A and B are both important，they are attribute which are equally necessary for a person to achieve success in his life.

4) Different people have different attitudes towards……，some believe that……others，however，argue that……still others maintain that……

5) First……besides，in addition……what’s more……

6) For one thing……nevertheless，for another……

四、转折句型

1)……Such defects as mentioned above can be prevented by the other way of ……

2) Except for ……’s sake only.

3) Perhaps A is the wrong word，however，B might be better.

4) First……last but not least……

5) Shall we do this? Not necessary the case.

6) ……，and vice versa indeed .

7) On the contrary，in spite of these increase……

8) Compared with A，B has many advantages such as……

9) Not so much…… as he had talked about.

10) ……，the truth of the matter，however，is that……

11) For some，the way maybe right，nevertheless，for many others……

12) As everything going to the extreme has its negative aspects，so has……

13) It is fairly well know that……however，it is less know that……

14) ……，but this was not always the case.

15) At first，……different in their opinions，on second thoughts，however，all of them agree to……

16) None the less(尽管如此)……

17) When people succeed，it is because of hard work，however，luck has a lot to do with it too.

18) ……，sometimes it isn’t totally the case，however.

19) Do some A else but B.

五、名理句型

1) It is usually the case that ……

2) It is plain common sense——the more/less……the more/less……

3) The serious reality had taught us a lesson： not being environment friendly will be avenged mercilessly.

4) As a proverb says/as is known to all/as a popular saying goes，……

5) I can think of no better illustration than an English poem/adage which goes like this：……

6) The old story of……can serve as a good illustration that……

六、强调句型

1) With/due to/spurred by……we can certainly cope with any task we are faced with，that is，……

2) The reason why……is no other than……as I know.

3) The same thing is true with……

4) What I want to point out is that，for a person who wants to be successful in life and to be useful in society，he will have to learn to be both A and B.

5) What a wonderful picture? Especially for we students always swimming in the sea of books!

6) It’s high time that immediate measures were taken to better the strength and face the challenges.

7) Before everything else，……is the secret of success.

七、图表句型

1) From the figures/statistics given in the table it can be seen/noticed that……

2) From the graph/table/diagram/chart above，we can see that……obviously.

3) As show in the chart/by the graph……

4) Have you ever anticipated the prospects of……in the coming decades? Let us just take a look at the figures of……as shown in the graph above.

5) The gap between……and……will be further widened.

6) In face of increasingly serious shortage of energy，we should take effective measures/which of the measures we should take?

7) It is clear that the increase of percentage gets greater and greater.

8) By……，the number of……had less/more than doubled/tripled compared with that of……

9) 短语：made up about……/the figure amounted to/will rise to/will reach/will double that/will tripled that

when we talk about dreams, we are so excited, we have many dreams, such as being a famous person, traveling around the world and so on. dreams are what we pursue for a lifetime, with many dreams, we have motivation to fight for our life. the opposite side of dream is reality, we have to face reality everyday, reality is what we perceive in our life. reality always frustrates us to be successful. we need to balance them. first, we need to face reality, though it is not ideal, we live in a world, we have to know exactly who we are. second, to make our dreams come true, we need to adjust our dreams according to the reality.

in this way, our dreams can achieve. lets work hard together to make our dreams come true.

Recently, a Chinese student who studied abroad delivered a speech at the

graduate ceremony. Her speech soon became the hot issue, because she criticized

Chinese air pollution, which was a great threat to her health. Though her speech

had exaggerated the problem, it is true that China has faced many pollution

problems. The haze in Beijing is famous around the world, which is the

punishment for human to ruin the environment. It needs time to fix the problem,

but there is no need to deny our country. Even for the developed countries, they

have once faced such problem before. We can do something in the daily life to

protect it, such as do not throw away the rubbish.

What is art? When people think about this question, they will naturally

think about all kinds of musical instruments or the great paintings in the art

museums. Art seems to so far away from the ordinary people, but I don’t think

so. Art is everywhere. For example, the delicious food that is made by our

parents is the great art, and the value of the food is to bring people the great

joy when they have a taste of it. The scenery around us is the visible art, when

we appreciate it, our mood become eased. Art is something that brings people the

positive value for me, so art is around everybody. If we take time to slow down

our pace, then we can enjoy art from life and feel the comfortable

lifestyle.

My House Dog

I’m a dog lover, because dogs are tame, friendly and easy to communicate with. I have kept one in my house, whose name is Chocolate. She is covered with brown curly hair and looks like a Teddy Bear. Now we have been living together for two years, so I’m very familiar with her characteristics. When she is hungry, she often barks loudly. At that time, I begin to realize that it’s time to feed her. She is keen on beef and fish. Sometimes, she also eats some rice.

我是一个爱狗的人，因为狗是很温顺，友好，也很容易交流。我在我家养了一只，它的名字叫巧克力。她的毛是棕色的卷毛，看起来就像泰迪熊。现在我们已经一起生活了两年了，所以我很熟悉她的性格。她饿了，她经常会大声吠。那个时候，我就会开始意识到是时候喂她了。她喜爱吃牛肉和鱼。有时候，她也吃一些米饭。

Every day when I come home, she always jumps up to me happily, with her tail moving. She seems to be my best friend. As time goes by, the relationship between us becomes closer and closer. Therefore, I think her as an important member in my family. I really have the pleasure of her company.

每天我回到家的时候，她都会用她的尾巴开心地跑向我。她就像是我最好的朋友一样。随着时间的流逝，我们两个的关系变得越来越亲密。因此，我觉得她是我们家里很重要的一员。有她在我真的很开心。

噢耶！过年喽！吃年夜饭了！”我高兴地到处嚷嚷。

除夕之夜是一家人团聚的时刻，俗话说得好：“有钱没钱，回家过年。”这一天是中华民族团聚欢乐的好时光。

我家也不例外，妈妈和姥姥做年夜饭，爸爸和姥爷贴春联，我呢在楼下和小伙伴玩鞭炮，大家都忙得不亦乐乎。

随着“久经菜场”的妈妈一声大喊：“上菜了……”拉开了年夜饭的序幕。望着这一桌热气腾腾的年夜饭，我馋得口水直往肚子里流。妈妈指着一盘红烧鲤鱼说：“这是‘年年有余’！”姥姥指着红烧鸡说：“这是‘吉祥如意’！”爸爸与姥爷碰杯进酒：“祝您老福如东海，寿比南山！”并夹起青菜对二老说：“这是长庚菜，祝您二老长命百岁。”姥爷捋捋胡须，夹起用玉米粉做起的龙须饼说：“这是‘双龙戏珠’该外孙吃，争取考双百！”我开玩笑地回答：“考试有四门呢！”“哦，那就再夹两个！”姥爷乐呵呵地又往我的碗里夹了两个，“那就考两个双百!”“好，好!”我狼吞虎咽地吃了起来……

这时，姥爷笑咪咪地说：“我来给大家发红包，前提是每人必须回答一个问题。”大家顿时安静了下来。“老婆子，请听题：“长长一串，一爆赛过红豆子。”姥姥稍思片刻说：“爆竹。”“中奖！”姥爷乐呵呵得将红包递给了姥姥。

后来姥爷又对爸爸说：“小小一个本，计算是第一。”爸爸脱口而出：“是计算机。”爸爸笑嘻嘻地接过了红包。

“外孙，该你了。我来考考你的数学，5×6×3.14等于多少？”我思考了一下：“等于94.2。”“正确！”我也赢得了一个红包。

“女儿，你是家庭主妇，我问你，什么东西越洗越小？”“肥皂。”妈妈也顺理成章地得到了一个大红包。

屋内笑声阵阵，屋外鞭炮声声，这也正应了门外那副春联：四海为春春不老，九州同乐乐无穷。

How to improve network security

As time goes ongoing surfing on the Internet become more and more popular.It is a new phenomenon and sounds an alarm (for online security ).

Network security cover anti- virus network security and hacker protection . Together with the technology of Access Control redundant backup recovery and network security it makes an allround security system . Many companies devote to the information security technology and product research and development production and sales providing advanced network security solutions . Firewall just is an effective measure of network security .如何提高网络安全

随着时间的推移，上网冲浪变得越来越流行，这是一个新的现象，听起来是一个警钟(在线安全)。

网络安全覆盖防病毒、网络安全和黑客保护。结合访问控制技术、冗余备份恢复、网络安全，它使一个全面的安全系统。许多公司致力于信息安全技术和产品的研发、生产和销售，提供先进的网络安全解决方案。防火墙只是是网络安全的一种有效措施。

Luxuriant it gives us boundless endless fun. A long summer vacation to supply the vast reveals itself for the classmates of the stage. And plans to use the summer vacation time, has become our current begin to should do.

One, scientific and reasonable to develop a plan of summer vacation work.

Amount of work in the holiday, want to do the work. To put these job screening, mediation, according to the summer fair time settling, draw up a table "" summer deeds. All the cruel deeds should be carried out in accordance with the "schedule", but still need to be careful mix.

Second, serious review, welcome to scholarship test

This test is after the summer vacation the first put a summary of the semester, summer vacation, want to put the first semester studies the entire contents of the seriously review again, and to formulate a "review schedule. For good measure.

Third, develop my funny hobbies, growth of my specialty.

According to my funny hobby, takes an active part in all kinds of funny Hong shed organized group, such as: painting, calligraphy, music, English, journalism skills, grasp the skills, as to lay a foundation for the growth of the letters patent day.

Fourth, study diligently, careful accumulation, longer than writing, used motor

Manipulation of the heat I visit a few good books as points. Such as: national classics, history allusions, good books and periodicals, fables, fairy tales, etc., progress I browse ability and writing level, edify sentiment.

Else, might as well also active in the summer sports refined, help parents do more housework, experience to meet the social actual deeds... Only seize the opportunity to reveal themselves constantly, expand the line of sight, to be healthy growth.

Many traditional arts are losing nowadays, because some of them have been

replaced by the new machines and the scientific products. I feel so sorry about

the losing arts, in my opinion, they are so classic and their charm will never

fade away. Take my grandma for example. She is good at paper-cut which was

inherited from her mother. But when comes to my mother’s generation, paper-cut

seems to be kicked out, there are less people need it, so my mother doesn’t

learn this skill. The paper-cut art is losing in my family. When I found my

grandma had this skill, I was so surprised and curious about it. I asked my

grandma to teach me this skill. During the process, I found this art was so

great, I was attracted by it. Some traditional arts like paper-cup should be

kept.

Oceans becoming more acidicThe worlds oceans are slowly getting more acidic, say scientists.The researchers from California say the change is taking place in response to higher levels of carbon dioxide in the atmosphere.The lowering of the waters pH value is not great at the moment but could pose a serious threat to current marine life if it continues, they warn.Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature.Increasing use of fossil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater.

Once in the water, it reacts to form carbonic acid.Scientists believe that the oceans have already become slightly more acidic over the last century.But these researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change."This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere," said Dr Caldeira."And we predicted amounts of future acidity that exceed anything we saw over the last several hundred million years, apart from perhaps after rare catastrophic events such as asteroid impacts."If carbon dioxide release continues unabated, ocean pH could be reduced by as much as 0.77 units, the authors warn.It is not absolutely clear what that means for marine life, however.

Most organisms live near the surface, where the greatest pH change would be expected to occur, but deep-ocean lifeforms may be more sensitive to pH changes.Coral reefs and other organisms whose skeletons or shells contain calcium carbonate may be particularly affected, the team speculate. They could find it much more difficult to build these structures in water with a lower pH.In recent years some people have suggested deliberately storing carbon dioxide from power stations in the deep ocean as a way of curbing global warming.But Dr Caldeira said that such a strategy should now be re-considered."Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing - because in releasing CO2 into the atmosphere we warm the planet; and when CO2 is absorbed by the ocean, it reduces the amount of greenhouse warming.